In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Q: Question: How old was Sir Edward Hughes when Cooke was promoted to Lieutenant? Passage:John Cooke was baptised on 5 March 1762 at St. Mary, Whitechapel, the second son of Francis Cooke, an Admiralty clerk, and his wife Margaret. John Cooke first went to sea at the age of eleven aboard the cutter under Lieutenant John Bazely, before going ashore to spend time at Mr Braken's naval academy at Greenwich. He was entered onto the books of one of the royal yachts by Sir Alexander Hood, who would become an enduring patron of Cooke's. In 1776 he obtained a position as a midshipman on the ship of the line , aged thirteen. Cooke served aboard Eagle, the flagship of the North American Station, during the next three years, seeing extensive action along the eastern seaboard. Notable among these actions were the naval operations around the Battle of Rhode Island in 1778, when Eagle was closely engaged with American units ashore. He distinguished himself in the assault, causing Admiral Lord Howe to remark "Why, young man, you wish to become a Lieutenant before you are of sufficient age." On 21 January 1779, Cooke was promoted to lieutenant and joined in the East Indies under Sir Edward Hughes, but was forced to take a leave of absence due to ill-health.

A: 
b